Seized turbocharger back on-line

Seized turbocharger back on-line

If you are reliant on “heritage” engine models, or those simply not made anymore, then chances are you will have experienced supply problems for ongoing maintenance or repairs. Sourcing of spares can usually be overcome with a bit of digging, but when it comes to major assemblies, it can be a lot more complicated, not to mention expensive! One of our clients found themselves in that position recently with two Sulzer LAG46 Turbochargers that had...

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Dropped Valve Seats

Dropped Valve Seats

During the overhaul of a generator package, we came across an issue that could’ve been costly to our client. As standard, we removed & dismantled the cylinder heads, including the valve seats. However, the process for the seat removal (to heat each head to 220°C, then remove the valve seat & install the new one before the head can cool) doesn’t allow time to measure the valve seat bores. With aluminium heads, the new seats...

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Deutz DFP6 fire pump cooler issue

Deutz DFP6 fire pump cooler issue

You may remember my email about the RCA we carried out on a Deutz DFP6 fire pump engine? If so, you’ll know that the engine had suffered extensive vibration damage.To replace the failed engine, we used a donor that was overhauled and converted to match the same specification as the original.And all this seemed to be working until we had the engine on test!The test procedure consisted of checking for leaks, then running on idle before gradually...

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Cracked Paxman 12YH Cylinder Heads

Cracked Paxman 12YH Cylinder Heads

In the workshop, at the moment we have some cylinder heads from a Paxman 12YH engine which are being overhauled in preparation for use on an upcoming engine work scope. The cylinder head overhaul consists of our standard process and following this meant we were able to highlight a couple of issues which would have caused major problems if any corners had been cut.  This is the procedure we follow: • Dismantle • Clean • Inspect...

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Superseded Tooling

Superseded Tooling

You may remember that I shared some information on a couple of ABB VTC 254-13 turbos sent in for overhaul and repair, one of which was cracked. If you missed it, you can check it out here. We’ve continued work on this overhaul and we’re now completing the rebuild, during which we came across another challenge which the OEM had solved (though on a different model). One of the turbochargers required a new turbine wheel and shaft with a new...

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Caterpillar 3512 Cracked bedframe

Caterpillar 3512 Cracked bedframe

Our engineer, Matt, has just returned after supporting an operator in the Caspian Sea with the overhaul of their Caterpillar 3512 generators. Whilst working with some local engineers who had begun dismantling the engine, they showed him something they had found which required urgent attention. This is something we have come across many times before and seems to be a recurring issue, though with different causes, different damage and...

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